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US Patent: 2,281,566
Air Vent Valve
Patentee: Lewis W. Eggleston (exact or similar names) - Davison, Genesee County, MI USPTO Classifications: 137/200, 137/202, 236/61, 251/205, 285/918 Tool Categories: hardware : valves specialty machines : heating apparatus Assignees: Detroit Lubricator Co. - Detroit, Wayne County, MI Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Apr. 22, 1940 Granted: May 05, 1942 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Detroit Lubricator Co.

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